- Adding 50+ years to life of aging system
- Protecting Chesapeake Bay watershed
- Relining 10,000 linear feet of pipes
ARLINGTON, VA – The Arlington County Board today approved three sewer main relining contracts that will help protect the Chesapeake Bay watershed by renewing aging infrastructure.
The Board approved $3.7 million to reline three sewer mains. The pipes, which total nearly 10,000 linear feet, are located at Ballston Pond (Washington Blvd. to Fairfax Drive), the Potomac Interceptor (S. Eads St. and Army Navy Dr.), and S. Walter Reed Dr. To Shirlington Rd. These projects support the goals of the Sanitary Sewer Collection Master Plan and are funded by the County’s utility funds as well as Fairfax County and the City of and Alexandria.
“This is a serious investment in critical infrastructure that we must make on a regular basis,” said Arlington County Board Chair Walter Tejada. “Maintaining our system will help to ensure that we can continue to serve Arlington’s growing population while protecting our environment.”
The Board voted unanimously to approve the contracts.
Arlington’s sanitary sewer system is made up of 465 miles of sewer mains that carry wastewater from homes and businesses to the County’s recently upgraded and expanded Water Pollution Control Plant for treatment. The County’s Water Sewer Streets Bureau runs several maintenance programs to ensure the sanitary sewer system operates efficiently.
Preserving critical infrastructure
Approximately 60 percent of the County’s sanitary sewer system was placed before the 1950s. As the system ages, pipes begin to corrode and cause sewer backups. The relining process will add another 50+ years to the existing infrastructure.
The contractor, AM-Liner East, Inc. will use the Cured-In-Place-Pipe (CIPP) relining method to rehabilitate this portion of the sewer system. This cost-effective, trenchless technology involves inserting a resin-impregnated felt liner similar to a sock into an existing sanitary sewer main and curing it using hot water or steam. Once complete, the new cured pipe renews the old sewer by providing a smooth channel.
Protecting our waterways
As part of the Potomac Interceptor Project, Arlington County is evaluating and repairing manholes throughout the sewer system. These efforts will reduce the potential for water seeping into the sanitary sewer system, especially during storm events when excess water could overwhelm the water treatment plant and force a discharge of partially-treated sewage into Four Mile Run.
To learn more, visit the County website. Scroll down to Item #36 on the agenda for the Saturday, September 21 County Board Meeting to read the staff reports.